Definition of blockbuster in English:

blockbuster

Syllabification: block·bust·er
Pronunciation: /ˈbläkˌbəstər
 
/

noun

informal
A thing of great power or size, in particular a movie, book, or other product that is a great commercial success: [as modifier]: a blockbuster pay-per-view special event
More example sentences
  • They elect presidents and make films into blockbusters and books into bestsellers.
  • I have done a whole body of work - classy blockbusters, completely commercial films and art movies.
  • It's really easy to write a mainstream pop song, a bestselling novel, a blockbuster film…

Origin

1940s (denoting a huge aerial bomb capable of destroying a whole block of streets): from block + buster.

Definition of blockbuster in: